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arm/boot: Free dtb blob memory after use

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The dtb blob returned by load_device_tree() is in memory allocated
with g_malloc(). Free it accordingly once we have copied its
contents into the guest memory. To make this easy, we need also to
clean up the error handling in load_dtb() so that we consistently
handle errors in the same way (by printing a message and then
returning -1, rather than either plowing on or exiting immediately).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Message-id: 1371209256-11408-1-git-send-email-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2013-06-25 18:34:13 +01:00
parent 67110c3e01
commit c23045ded7
1 changed files with 15 additions and 5 deletions
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20
hw/arm/boot.c
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@ -237,14 +237,14 @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo)
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, binfo->dtb_filename);
if (!filename) {
fprintf(stderr, "Couldn't open dtb file %s\n", binfo->dtb_filename);
return -1;
goto fail;
}
fdt = load_device_tree(filename, &size);
if (!fdt) {
fprintf(stderr, "Couldn't open dtb file %s\n", filename);
g_free(filename);
return -1;
goto fail;
}
g_free(filename);
@ -252,7 +252,7 @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo)
scells = qemu_devtree_getprop_cell(fdt, "/", "#size-cells");
if (acells == 0 || scells == 0) {
fprintf(stderr, "dtb file invalid (#address-cells or #size-cells 0)\n");
return -1;
goto fail;
}
mem_reg_propsize = acells + scells;
@ -264,7 +264,7 @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo)
} else if (hival != 0) {
fprintf(stderr, "qemu: dtb file not compatible with "
"RAM start address > 4GB\n");
exit(1);
goto fail;
}
mem_reg_property[acells + scells - 1] = cpu_to_be32(binfo->ram_size);
hival = cpu_to_be32(binfo->ram_size >> 32);
@ -273,13 +273,14 @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo)
} else if (hival != 0) {
fprintf(stderr, "qemu: dtb file not compatible with "
"RAM size > 4GB\n");
exit(1);
goto fail;
}
rc = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property,
mem_reg_propsize * sizeof(uint32_t));
if (rc < 0) {
fprintf(stderr, "couldn't set /memory/reg\n");
goto fail;
}
if (binfo->kernel_cmdline && *binfo->kernel_cmdline) {
@ -287,6 +288,7 @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo)
binfo->kernel_cmdline);
if (rc < 0) {
fprintf(stderr, "couldn't set /chosen/bootargs\n");
goto fail;
}
}
@ -295,19 +297,27 @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo)
binfo->initrd_start);
if (rc < 0) {
fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
goto fail;
}
rc = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end",
binfo->initrd_start + binfo->initrd_size);
if (rc < 0) {
fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
goto fail;
}
}
qemu_devtree_dumpdtb(fdt, size);
cpu_physical_memory_write(addr, fdt, size);
g_free(fdt);
return 0;
fail:
g_free(fdt);
return -1;
}
static void do_cpu_reset(void *opaque)